1472975-2

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Time delay relays can be used when the need arises for a device to activate after some time has elapsed. They typically consist of an electromechanical relay enclosed in a protective housing. The working principle is that when power is applied, an internal timer begins to count down. At the end of the time period, an electric circuit is completed, energizing the relay. When the time period expires, the relay de-energizes, and the electrical circuit is broken. This type of time delay relay is sometimes known as a timer relay or a slow-blow relay.

The 1472975-2 time delay relay is a compact and reliable unit for applications requiring a timed on-delay event for use with a regulated or uncontrolled power supply. It is suitable for a wide range of applications, with the delay adjustable from 0.5 to 30 seconds. This range of time delay relays provides a valuable alternative to existing relays that require extensive recalibration and resetting.

The 1472975-2 time delay relay is a single-phase device, available in either external supply or integrated (internal) supply versions. In the external supply configuration, the relay receives power from an external supply, while in the internal supply configuration, an internal supply is connected to the relay circuit. In both configurations, the relay is capable of performing an on-delay function, delaying the activation of a load until a preset time delay has elapsed. The timing period is completely adjustable within a 0.5-30 second range to suit a wide range of operational requirements.

The 1472975-2 time delay relay includes a built-in auto-reset feature, which allows it to reset itself after the elapsed time period. It also provides thermal protection, with two reset temperatures making it suitable for operations up to 75°C. In addition, the 1472975-2 provides LED indication of power-on, timing, timing out and power off conditions.

Internally, the 1472975-2 time delay relay uses a thyristor-based triggering device. The thyristor is a semiconductor device that controls the timing of the relay. When power is applied, the thyristor conducts, starting the timing cycle. When the elapsed time reaches the set point, the thyristor turns off, de-energizing the relay and breaking the circuit. The reset temperature of the thyristor is adjustable, and the timing cycle can be adjusted by a potentiometer.

The 1472975-2 time delay relay is a reliable and versatile solution for time-delay events. Its adjustability and built-in features make it suitable for a wide range of applications and are a valuable tool to help ensure accurate and dependable control of the timing of an electrical circuit.

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